Hach-Lange 9187 sc - Manual (Page 5)

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Section 1 Specifications
Specifications are subject to change without notice
General
Mounting Flat, vertical surface such as a wall, panel, stand, etc.
Analyzer Dimensions 10.63 x 9.84 in. (270 x 250 mm)
Analyzer Weight 6.5 kg (14.3 lb)
Materials Electrode: gold cathode/silver anode; probe body: PVC; measuring cell: acrylic
Sample Requirements
Sample Flow Rate to Analyzer Flow rate should allow for 14 L/hr minimum
Minimum Inlet Pressure to
Instrument
0.1–2 bar (1.4–28 psi)
Minimum Flow Rate 14 L/hr auto-regulated by flow thru cell
Pressure Range 0.1–2 bar (1.4–28 psi) influent; flow cell pressure will be the atmospheric pressure
Sample Temperature Range +2–45 °C (35.6–113 °F)
Temperature Compensation Automatic over the sample Temperature Range
Sample pH 4 to 8 (acidification unit available for >8 pH)
Sample Inlet Tubing: at
instrument
¼ in. OD
Drain Fitting ½ in. ID (supplied)
Application Sample Clean water
Electrical
Power Consumption 12 V, 1.5 Watts provided by sc controller
Performance
9184sc 9185sc 9187sc
Measurement Range 0–20 ppm (0–20 mg/L) HOCl 0–2 ppm (0–2 mg/L) O
3
0–2 ppm (0–2 mg/L) ClO
2
Detection Limit 5 ppb (0.005 mg/L) HOCl 5 ppb (0.005 mg/L) O
3
10 ppb (0.01 mg/L) ClO
2
Accuracy
2 % or ±10 ppb HOCl,
whichever is greater 3 % or ±10 ppb O
3
,
whichever is greater
5 % or ±10 ppb ClO
2
,
whichever is greater
Standard Deviation 0.7 % 1.0 % 1.5 %
Interference
No interference from
chloramines.
Ozone and chlorine dioxide
interfere with measurement. No interference from
chlorine, chloramines,
hydrogen peroxide, bromine,
or chlorine dioxide.
None
Repeatability ±10 ppb (0.01 mg/L) or ±5 %, whichever is greater at a pH < 7.5
Response Time 90 % < T=90 seconds
Measurement Interval Continuous
Measurement Technology Amperometric/Membrane (electrode, membrane, electrolyte)
Calibration
Electrical zero or chemical zero with dechlorinated or deozoned water; calibration of the
slope by comparison with a laboratory instrument; pH calibration (9184sc only) with Single or
Two Point using standards or comparison with lab method with the process sample.
Calibration Interval 2 months for typical application
Maintenance
Maintenance Interval,
Measurement Cell
6 months for the membrane and electrolyte for typical operation (3 to 12 month range)
Maintenance Interval, pH 1 to 1.5 years for typical operation